arithmeticmean 35,56,34,44,52,12,34,45

解答

平均值

35, 56, 34, 44, 52, 12, 34, 45

39

求解步骤

计算数据集的和:

i = 1 \sum n a_{i} = 312

计算数据集中的项的数量:

n = 8

将和除以项的数量然后化简:

39

= 39

a r i t hm e t i c m e an 50, 55, 51, 52, 54, 52, 49, 53

m e d ian 64, 65, 63, 66, 66, 65, 66, 69, 66, 63

a r i t hm e t i c m e an 90, 90, 95, 100, 80, 75, 80, 70, 60, 95, 100, 100, 100, 75, 80, 90, 90, 90, 70, 70, 80, 85, 90, 90, 85

s t d 100, 100, 90, 90, 90, 80, 80, 80, 80, 80, 70

a r i t hm e t i c m e an 95, 82, 77, 64, 100, 97, 95, 95, 81, 80, 80, 84, 98, 77, 61, 69, 71, 80, 100, 999